Summer's face has very clearly been touched up, i'd go further than QuoterGal and say it happens not just all-too frequently but all the time nowadays. I suspect you'd be very hard-pressed to find a magazine cover (featuring people) that hasn't had blemishes removed, skin-tone smoothed etc. From tiny things like moles all the way up to Kate Winslet style hip reductions, nose narrowing or eye mirroring to increase bilateral symmetry.

If anyone seriously thinks that Summer needs "touching up", we are all doomed to Nip/Tuck land. (Not to do the deed personally, but doomed to never see a photo of what a "celebrity" looks like in reality.)
Yay for fan photos at conventions, real people looking like real people and still gorgeous, just not "air-brushed perfection", to which .... eeew, anyhow.